Db lamjy freebobn



DE L. FREEBORN.

GAS PIPE GOUPLING.

o. 50,1111. Patented Sept. `26, 1865.

WM w Y was@ UNITED STATES PATENT OFFICE.

DE LANGY FREEBQRNfOF NEW YORK, N. Y.

GAS-:PIPE GOUPLING.

Specification forming part of Letters Patent No. 50,] ll, dated September Q6, 1865.

To all whom it may concern.-

Be it known that I, DE LANcY FREEBORN, of New York,in the county of NewYork, State of New York, have invented a new and useful Mode of Fastenin gFleXible ElasticP-ipe tallietallic Tubes; and I do hereby declare that the followin gis a full and exact description thereof;

reference being had to the accompanying draW- ,y

ings, and to the letters of lreference marked thereon.

Similar letters of reference indicate corresponding parts in all the figures.

Figure lis a side elevation of a metallic tube or gas pipe as it is fitted preparatory to its insertion into the elastic pipe. Fig. 2 is a side elevation of a wooden or metallic slotted thimbl'e,w.hich sli ps over the conicalend c o', aftee.

the part c has been inserted into the pipe P. Fig. 3 is a side elevation of a metallic thimble which is forced over B, so that the part czcomes upon c2. Fig. 4 is a side elevation of all these parts in `their places. Fig. 5 is a side elevation of all these parts, illustrating the mode and order of their adjustment. Fig. 6 isa View of the same after the pipe P has been inserted and all the parts are in their places. Fig. 7 is a longitudinal vertical section on an enlarged scale through the same, showing the relation of the parts when in position. Figs. 8 and 9 represent different modifications ot' the parts a a a?. Fig. ld is a longitudinal vertical section through B, showing a modification of its interior surface.

My invention relates more especially to the manner of fastening metallic ends to flexible gas-pipes where it is desirable to make a very firm a nd durable joint with neat-ness of appearance, asin drop-lights, cigar-lighters, &c.; but when duplicated may be used as a coupling for hose, tbc.

To enable others skilled in the art to make and use my invention, I will proceed to describe its construction and operation.

A 'is a metallic tube or gaspipe, uniform in diameter, or sufficiently enlarged at a'to answer the purpose of a'shonlder. The part a. is turned down until its diameter at its outer end is the same as the diameter of the hole in the pipe P. The diameter of c gradually increases back to the shoulder c. The diameter of a at its outer end is the same as the diameter of the pipe P after the part a has been inserted.

The diameter ot'fc at its inner end is slightly greater than' at its outer end. The screw al tits into the part c2 of U, and serves both to draw the thimbleG backward verv firmly upon B and to retain'all the vparts in their places. The shoulder c3 is uniform in diameter .with the diameter of C at c2.. l i

iB is a thimble, slotted at its outer end, which iits tightly upon A, the part b coming upon a', and it is conical, the diameter at b being greater than the diameter at b. The diameter of the hole in B is also conical, being smaller at its outer end., I), so that when driven back to its place the slotted part Z will iit closely upon the pipe P.l The dilierent sections of B are beveled at b'from. the upper side, so that theinnersnrface of (l will readily pass over them. In some cases Ipermanently attach B to A, either by solder or otherwise.

Gis a thimble or ring having a female screw at its inner end, c2, which, when in place, ts upon c?. The diameter of the hole in the outer end, c, corresponds exactly with the diameter of the pipe P. The diameter of this hole increases from the outer end, c, back to the female screw -at c2, and the diameter of this hole at c is the same as the diameter of B at b.

When the parts are in place', A extends out from a3 a little beyond G, as indicated by c in Figs. 4.- and 7, and C extends from the same point a little farther than B, as indicated by c in Fig. 7. To adjust the parts, rst slip the pipe P through the hole lin C and then through B, as indicated in Fig. 5; neit insert the part t into the end of the pipe P. This operation may be facilitated by slightly threading the part c, as indicated in Fig. 9.' When arhas been inserted into the pipe P to the desired distance, push the thimble B back toward A,

until the part b" rests upon a', and move the compressing-thimble C back over B, until the part c2 fastens on a2 and presses snugly' against the shoulder c3, when the whole will present the appearance as indicated in Fig. 6.

.y The best mode heretofore known of fastening metallic ends to flexible gas-pipes has been to screw the pipe into a conical female screw in the end of the metallictube. There are several defects in this inode of fastening flexible elastic gas-pipes which very much hinder its practical workin g, causing an escape of gas, and necessitating a constant repair of. droplights and similar devices or the laying them aside altogether.v The pipe itself, being, of necessity, soft and yielding, cannot be screwed in rmly enough to make a tight and durable joint, and, even when newly made, is liable to leak, and a very little handling breaks loose the cement with which the joint is often secnred,'and wears off the thread which has been out in the pipe by the female serewin the act 0f inserting it, and allows the pipe to slip out from the metallic end. y

My invention entirely o\'ercomes these 'de` fects. The tube a, since it is tubular, eanbe quite thin, and yet sustain a strong pressure when applied evenly to its outer surface, and when it isinserted into the hole in the pipe P the increase in the diameter of a as itA approaches the part a' causes the pipe P to 'hugy closely around a. The thimbleB,Whe1'1 moved to its place, presses against the exterior of P The combination of the inner cylinder, a, and the slotted thimble B, between which P is inserted and com pressed, and the compressingthimble C, all substantially in the manner and for the purpose herein set forth.

DE LANGY FREEBORN.

Witnesses:

L. B. REYNOLDS, T. W. vBELLoWs. 

